Perforating mechanism.



R. M. DAVIDSON. PERFORMING AMEGHANISM.

A1PLICVAIION FILED JAN. 29, 1908.

WITNESSES: INVENTOR @Mmmm BY vide, in a RoDnRieK M'. DAvrDsoN OF ELMIRA,NEW YORK.

PERFQRATING MEGHANISM.

To all whom it may concern:

Be it known that I, RODERICK M. DAVID- SON, a citizen of the UnitedStates, residing at Elmira, in the county of Cheniung and State of NewYork, have invented certain new and useful Improvements in PerforatingMechanisms, of which lthe following is a specification. x

This invention relates to improvements in mechanisms for forming linesof perforations in traveling webser sheets of paper.

One object of my improvements is to promechanism of this character, arotating cylinder carrying a radially reciprocatin perforating blade sooperated as to be with rawn below the surface of the cylinderimmediately after the paper has been perforated, thereby avoiding thenecessity of employing withdrawing rolls to draw the paper from theperforator teeth and the oonsequent tendency to-tear the paper at theperforations whilejpassing through the machine.

A further object is to rovide means for setting the perforating glade atdifferent points around the cylinder to locate the perforations Whererequired on thepaper; and to )rovide the cylinder with means for attacing more than one perforating blade, independently adjustable, wherebyseveral lines of perforations at variable distances apart may beproduced for each revolution of the one cylinder.

' Iattain my objects by constructing and arranging the parts of theperforating mechanism in the manner illustratedin the accompanyingdrawings, in whichh Fgure 1 represents a front elevation of theperforating mechanism, in so far as my improvenients are concerned; Fig.2, a plan view of the p'erforating cylinder showing one of theadjustable cylinder segments containing the perforating blade; Fig. 3, atransverse'section on the line a-a in F ig. 1 and Figs. 4 and 5, similarsections, respectively, on the lines b-b and c-c, in Fig. 2.

Like numerals designate like parts in the several views.

l The' two cylinders, 2 and 3, which carry the several parts of theperforating mechan-.l

ism, are mounted to rotate between thej' Specification of LettersPatent.

Application filed January 29, 1908. Serial No. 413,288.

Patented Sept. 8,41908.

frame-plates 1, 1, portions only of which are shown in Fig. 1. At oneside, the cylinder shafts are extended at 4 and 5 to receive the drivinggears through which motion is imparted from the main gear train of themachine.' (For an example of one application of this mechanism see myco-pending application Ser. No. 413,289, iiled January 29, 1908, forimprovements in perforating, cutting, and delivery apparatus). Upon thecylinder 2 is mounted a cylinder segment 6, which is adjustably fastenedupon the cylinder 2 by means of the countersunk nut 7, which receives ascrew stud on the clamping block 8, which slides in a dovetailed groove9, formed around the cylinder 2, said groove being provided at 10 withan aperture through which the block may be inserted in the groove. Ateach side of the central groove are shallower grooves 12, adapted toreceive plates 11, attached to the under side of the segment to fastentogether the two parts thereof formed by cutting the slot for theperforating blade. The cylinder ends are flanged at 13, to hold theblock in proper longitudinal alinement upon the cylinder. The segment 6is provided with a longitudinal groove or chamber to receive theperforatng blade 14. This blade is fastened to a cross bar 15, withinsaid groove, the ends of which project outwardly from each end of theblock into engagement with slotted openings at the ends of arms 16 and17, fastened to a shaft 18 mounted to oscillate in the segment 6. Oneend of the shaft 18 is provided with an arm 19, upon which is carried aconical roller 20 on a pin 21, said pin being screw threaded and adaptedto be adjusted longitudinally in the crank arm 19, by means of theadjusting and lock nuts 22. The roller I20 engages a cam surface 23,cast or otherwise fastened upon the inner face of one of theframe-plates 1,' said cam surface being .fbeveled to correspond with theroller, and being so formed as to impart the necessary 5 movement to theroller and the crank arm 19 to project the perforating blade, when saidI blade is approaching axial alinement with the cylinder 3, and todepress the blade immediately it has passed the line of centers betweenthe two cylinders, as will appear from an inspection of Fig. 3. In orderto hold the roller 20 against the cam surface and to retract theerforating blade after 'each outward stro re thereof, a coiled spring 24is placed on the extended hub of the arm 17, one end of 4which spring isfastened to the segment 6, and the other end to a collar 25 adjustablymounted upon the shaft 18,`

whereby the tension of the spring may be re ulated as re uired.

- 7hile the per orating blade may be used in conjunction with any formof receiving, or female cylinder, I preferably form said receivingcylinder with a plurality of circumferential grooves as illustrated inFig. 1 g into which grooves the teeth of the perforating blade enter,when ejected from ,the segment. By employing this Agrooved c linder, Imay set the segment around the cy inder 2, in any position, regkardlessof the alinement of the perforating lade with the cylinder 3; and I mayalso attach additional segments carrying these perforatiiig blades, and`position them about the cylinder 2, as requirement may arise. As der 2is capable of carrying as many as four of these cylinder segments, eachof which and the erforating mechanisms carried thereby wil be the sameas that above dcscribed, and operated in the saine manner as they rotatewith their rollers in contact with the cam surface 23. This constructionwill be of particular advantagcwlien the paper is to be provided withseparate stubs, coupons, etc., where more than one line of perforationsis required upon 'each finished sheet oi' roll at varying distancesapart.

B y providing the crank arms with the conicalrollers, mounted uponadjustable crank i `strueted, the web or sheets of pa pins, l ani.enabled to readily adjust the throw of the perforating blade, and totake up wear that thc blade will be caused to be thrown outwardl more orless from the segment, by causing t ie roller to ride higher or lowerupon the cani 23. If desired, however, a cylin-` drical roller may beemployed upon a corresponding cam surface, and the adjustment of the|blade accomplished in a diiierent manner.

With a perfoiatiiig mechanism so Yconer will -pass freely between thecylinders wit ioutv danger of being carried out of the line of travel bythe teeth of the perforating blade, or blades, and no ulling strain isrequired to beplaced u on t e paper to free it from the teeth. T iemechanism is made compact and readily adjustable to meet requirements.

What I claim as m invention, to secure by Letters atent is 1.. Apcrforating mechanism comprisingv a and desire herein illustrated thecylintherein, since it will be understood eatin c linder, a cylindersegment circumferentially adjustable thereon, a perforating bladecarried in a slot extending longitudinally across the segment, a shaftpassing across the segment and provided with arms at each end, said armsbeing in engagement at their free ends with projections from the ends ofthe perforating blade, aacrank at one end of the shaft, a camadapte'djto actuatcl the crank to roject and retract the perforatingblade,

a emale cylinder adapted to receive thev teeth of the blade, am thecylinders.

2. A perforating mechanism comprising a cylinder, a cylinder segmentcircumferentially adjustable thereon, a perforating blade adapted tomove radially in said segment, a shaft carried by the se ment andadaptedto im )art motion to the lade, a crank on one end of said shaft,a crank pin mounted thereon provided with a conical-roller, means forlongitudinally adjustin the pin in the crank, a beveled cani engaged j ythe roller, a female cylinder ada ted to receive perforating b ade,cylinders. 3. In a a perforating blade carried thereby and movable inand out of the cylinder, an oscillatin shaft provided with arms coupledto sai blade, an operating crank on said shaft provided with a crankpin, a stationary cam eniiieans for rotating gaged by `said pin, andmeans for rotating the cylinder.

4. In a erforating mechanism, a cylinder,

the teeth of the and means for rotating the a perforating blade carriedthereby and inovable in and out of the cylinder, an oscillating shaftcoupled to said blade, an .operating crank on said shaft )rovided with acrank pin of conical form, allieveled stationary cani engaged by saidin, means for ad justing'th pin longitudinal y, and means forrotatiiigthe cylinder.

5. A perforating mechanism comprising a.

cylinder, a perforating blade mounted thereon and provided with apluralityY of teeth, a

female cylinder provided with ya plurality of circumferential grooveseach adapted -to receive a tooth of the peiforatiiig blade, and meansfor rotating the cylinders.

6. A perforating mechanism comprising a I cylinder carrynig a radiallyreciprocating blade provided with a plurality of teeth, means foradjusting said b lade circumferentially on the cylinder, a femalecylinder provided with a plurality of circumferential grooves each adated to receive atooth of'the' perforating bla e, means for reciprotheblade as it moves into and out of perforating ioo radia alinenieiit withsaid cylinder, and

means for rotating the cylinders..

7. In a perforating mechanism,a'rotating cylinder ed( ted to receive oneor more eirl adjustment, and ineens for actuating seid 10 eumferential yadjustable cylinder segmentsfll 'blades during each revolution of thecylinder.

en eli segment carrying a perforeting blade In testimony whereof I haveaffixed my and provided with means for fastening it signature, inpresence of two Witnesses. lwhen' `)roperly adjusted upon the cylinder.T

' 8. fn e performing mechanism, a rotating RODERICK M' DAVIDSCmfCylinder adapted to have o plurality of rad- Witnessesz .elly movableperforming blades fastened A. S. DINEN,

thereon and susceptible of circumferential M. E. VERBECK.

